Carpenter Summit

The Interstate 8 route was realigned from Arnold Way onto Alpine Boulevard as it passed through Alpine and the Viejas Indian Reservation, before entering the Laguna Mountains and the Cleveland National Forest, mostly paralleling the alignment used by the old US 80. By August 1970, the remainder of the freeway had been funded in this area, with the part from Japatul Valley Road to Laguna Junction costing $22 million (). By the beginning of 1974, the new projected completion date for this I-8 section was mid-1975, with of two-lane highway remaining. The new Pine Valley Creek Bridge and the segment extending from Japatul Valley Road to Pine Valley was dedicated on November 24, 1974, and was scheduled to open on November 26; this left of freeway to be constructed. The final stretch of I-8 in California, from Sunrise Highway to La Posta Road, was completed in May 1975. ==References==